# Naming Conventions for Reference Sets

National Release Centres and others may create additional reference sets. A namespace is required to create a new reference set, as each reference set is defined by a concept. The concept's FSN and a synonym are used to name the reference set. Where a new reference set is created against an existing pattern, then the following naming convention should be used (where the text "_Specific name_ " is to be replaced by the specific name of the reference set).

## [Attribute Value Reference Set](5.2-reference-set-types/5.2.1-content-reference-sets/5.2.1.3-attribute-value-reference-set/5.2.1.3-attribute-value-reference-set)

* FSN = _<mark style="color:blue;">Specific name</mark>_ attribute value reference set (foundation metadata concept )
* PT = _<mark style="color:blue;">Specific name</mark>_ attribute value map

## [Language Reference Set](5.2-reference-set-types/5.2.2.1-language-reference-set)

For a Language:

* FSN = _<mark style="color:blue;">Language name</mark>_ \[International Organization for Standardization 639-1 code _<mark style="color:blue;">Language code</mark>_] language reference set (foundation metadata concept )
  * Example: <mark style="color:blue;">English</mark> \[International Organization for Standardization 639-1 code <mark style="color:blue;">en</mark>] language reference set (foundation metadata concept)
* PT = _<mark style="color:blue;">Language name</mark>_
  * Example: <mark style="color:blue;">English</mark>

For a Dialect:

* FSN = _<mark style="color:purple;">Dialect name</mark>_ _<mark style="color:blue;">Language name</mark>_ language reference set (foundation metadata concept )
  * Example: <mark style="color:purple;">Great Britain</mark> <mark style="color:blue;">English</mark> language reference set (foundation metadata concept)
* PT = _<mark style="color:purple;">Dialect code</mark>_ _<mark style="color:blue;">Language name</mark>_
  * Example: <mark style="color:purple;">GB</mark> <mark style="color:blue;">English</mark>

## [Deprecated: Annotation Reference Set](5.2-reference-set-types/5.2.1-content-reference-sets/5.2.1.6-deprecated-annotation-reference-set)

{% hint style="warning" %}
The use of this reference set structure is now discouraged.
{% endhint %}

* FSN = _<mark style="color:blue;">Specific name</mark>_ annotation reference set (foundation metadata concept )
* PT = _<mark style="color:blue;">Specific name</mark>_ annotation reference set

## [Association Reference Set](5.2-reference-set-types/5.2.1-content-reference-sets/5.2.1.4-association-reference-set)

* FSN = _<mark style="color:blue;">Specific name</mark>_ association reference set (foundation metadata concept )
* PT = _<mark style="color:blue;">Specific name</mark>_ association reference set
